Like Buff's said, it's hard to say. Sometimes you would change a bit too much after just one loss so it messes a lot of things. Then the second loss would make u change more which royally screws you.

When I am having a dip or when I lose a game, I stick to my guns and maybe bench the offending player (there is always one), sometimes it is a DR who get a 6 when everyone else gets a 7/8. If I lose more than 3 in a row with the same formation & orders then that shd be confirmation your team needs a nudge. If they recover the next match or two matches later then I don't change a thing.